The Clone Wars

"Master Kenobi has taken the Jixuan desert, so the southern hemisphere is ours."
Mace Windu[src]

There was a desert in the southern hemisphere of Ryloth called the Jixuan desert. This place was occupied by Jedi General Obi-Wan Kenobi and the Galactic Republic during the Battle of Ryloth, allowing the planet's southern hemisphere to fall under their control